Koki Oikawa

Professor Koki Oikawa is an academic researcher at Waseda University's Faculty of Social Sciences, School of Social Sciences, specializing in macroeconomics, economic growth, and innovation economics. With a Ph.D. in Economics from New York University (2007), he has established himself as a prominent researcher in monetary economics and firm dynamics, with significant contributions to understanding the relationship between inflation, monetary policy, and economic growth.

His primary research interests focus on Macroeconomics, Economic growth, Technological change, Firm dynamics, and Social learning. Oikawa's work bridges theoretical macroeconomic models with empirical analysis of firm-level data, particularly examining how price stickiness, inflation, and monetary policy affect innovation incentives and resource allocation. His research often incorporates Japanese economic data to provide comparative insights with the United States.

Oikawa has published 12 refereed journal articles with over 268 Google Scholar citations and an h-index of 8. His recent work examines reallocation effects of monetary policy, firm exit during the pandemic, and the tradeoffs between short-term and long-term impacts of monetary easing. His research consistently explores how firm-level dynamics aggregate to macroeconomic outcomes, with particular attention to innovation processes, technological diffusion, and the role of uncertainty in economic growth.

He has received multiple research grants from the Japan Society for the Promotion of Science, including a current project (2025-2030) on 'Empirical Study on General Purpose Technologies: Generation, Diffusion, and Impact' and a recently completed project (2021-2025) analyzing economic growth policies based on matching between companies and researchers. His professional affiliations include the Japanese Economic Association, American Economic Association, and Econometric Society.

As an educator, Oikawa teaches advanced macroeconomics courses at Waseda University's Graduate School of Social Sciences, including Macroeconomics I-III, Advanced Macroeconomics, and specialized seminars on applied macroeconomics. His teaching focuses on both theoretical foundations and empirical applications, preparing students for research in modern macroeconomics.